62 insulation contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Knightdale: Michael & Son Services, CR Score 59/100; 4.8★ from 13,263 Google reviews; open 24/7.
Best for emergencies (open 24/7): Service Experts Heating & Air Conditioning, posts 24/7 hours; ranked #2 of 62.
Most-reviewed: Service Experts Heating & Air Conditioning, 5,915 Google reviews at 4.9★, the most of 62 ranked after Michael & Son Services; ranked #2.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
62 Knightdale insulation contractors are ranked here by CR Score, from ten published factors. 6 are open 24/7, 29 open Saturdays and 12 open Sundays, based on posted hours. The median Google rating is 4.8★ across 62 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Michael & Son Services | 59 | 4.8★ (13,263) | Raleigh, 8 mi away | 24/7 | Overall |
| 2 | Service Experts Heating & Air Conditioning | 58 | 4.9★ (5,915) | Raleigh, 10 mi away | 24/7 | Emergencies, Most reviews |
| 3 | Crawlspace & Basement Innovations | 58 | 5.0★ (41) | Knightdale | — | — |
| 4 | EcoMaster Insulation Contractors and Home Performance Experts | 58 | 4.7★ (24) | Raleigh, 5 mi away | 24/7 | — |
| 5 | Carolina Basement Systems | 57 | 4.8★ (114) | Raleigh, 4 mi away | Sat · Evenings | — |
| 6 | Carolina Weatherization | 57 | 5.0★ (68) | Raleigh, 5 mi away | Sat | — |
| 7 | C&M Crawlspace Solutions | 57 | 5.0★ (24) | Apex, 12 mi away | 24/7 | — |
| 8 | Carolina Casa | 56 | 5.0★ (142) | Wendell, 7 mi away | Evenings | — |
| 9 | Palomo Insulation Inc | 56 | 5.0★ (39) | Wendell, 7 mi away | Sat | — |
| 10 | USA Insulation Raleigh-Durham | 56 | 4.9★ (298) | Cary, 10 mi away | — | — |
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Ranked #1 because of its Google rating and review volume: 4.8★ from 13,263 Google reviews, the most in Knightdale.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Raleigh, 10 mi away
Ranked #2 because of its Google rating and review volume: 4.9★ from 5,915 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Knightdale
Ranked #3 because of its Google rating and trade focus: 5.0★ from 41 Google reviews, listed on Google as “Insulation contractor”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Raleigh, 5 mi away
Ranked #4 because of its Google rating and trade focus: 4.7★ from 24 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Raleigh, 4 mi away
Ranked #5 because of its Google rating and trade focus: 4.8★ from 114 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Raleigh, 5 mi away
Ranked #6 because of its Google rating and trade focus: 5.0★ from 68 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Apex, 12 mi away
Ranked #7 because of its Google rating and trade focus: 5.0★ from 24 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Wendell, 7 mi away
Ranked #8 because of its Google rating and trade focus: 5.0★ from 142 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Wendell, 7 mi away
Ranked #9 because of its Google rating and trade focus: 5.0★ from 39 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Cary, 10 mi away
Ranked #10 because of its Google rating and trade focus: 4.9★ from 298 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Raleigh, 9 mi away
Ranked #11 because of its Google rating and trade focus: 4.9★ from 226 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Raleigh, 5 mi away
Ranked #12 because of its Google rating and trade focus: 4.8★ from 104 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Apex, 17 mi away
Ranked #13 because of its Google rating and trade focus: 4.9★ from 54 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Cary, 23 mi away
Ranked #14 because of its Google rating and trade focus: 5.0★ from 90 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Apex, 13 mi away
Ranked #15 because of its Google rating and trade focus: 4.6★ from 31 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Cary, 17 mi away
Ranked #16 because of its Google rating and trade focus: 5.0★ from 93 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Raleigh, 8 mi away
Ranked #17 because of its Google rating and trade focus: 4.8★ from 98 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Fuquay-Varina, 23 mi away
Ranked #18 because of its Google rating and trade focus: 5.0★ from 47 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Cary, 15 mi away
Ranked #19 because of its Google rating and trade focus: 4.9★ from 43 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Raleigh, 14 mi away
Ranked #20 because of its Google rating and trade focus: 5.0★ from 103 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Raleigh, 8 mi away
Ranked #21 because of its Google rating and review volume: 4.9★ from 317 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Cary, 16 mi away
Ranked #22 because of its Google rating and trade focus: 4.9★ from 70 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Apex, 17 mi away
Ranked #23 because of its Google rating and trade focus: 4.9★ from 51 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Raleigh, 13 mi away
Ranked #24 because of its Google rating and trade focus: 4.9★ from 98 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Cary, 9 mi away
Ranked #25 because of its Google rating and trade focus: 5.0★ from 32 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
#1 to #25 are shown in full above. Here are #26 to #50, in CR Score order; each links to its profile. We publish the top 50 of 62 ranked insulation contractors here; the rest are on their profiles.
20 more insulation contractors within 25 mi that we can't rank yet: too few reviews, or a trade we couldn't confirm. Listed A to Z.
| Business | Google rating | Distance |
|---|---|---|
| AH Crawlspace Services | 4.7★ (59) | In Knightdale |
| American Building Systems | 3.0★ (1) | 13 mi |
| B&C Insulation, LLC | 5.0★ (1) | 8 mi |
| Curtis Insulation | 5.0★ (1) | 24 mi |
| Davis Insulation | 5.0★ (2) | 8 mi |
| Ecomaster | 1.0★ (1) | 9 mi |
| FIRST INSULATION, LLC, | 5.0★ (1) | 10 mi |
| HomePro Services | 5.0★ (2) | 3 mi |
| Johns Manville | 5.0★ (1) | 19 mi |
| Peak Energy, Inc. | 5.0★ (1) | 8 mi |
| Raleigh Spray Foam Insulation | 5.0★ (1) | 14 mi |
| Ray's Stucco | 4.3★ (24) | In Knightdale |
| Res | 5.0★ (1) | 9 mi |
| SV Flooring Solutions Inc | 5.0★ (4) | In Knightdale |
| Top Painters LLC | In Knightdale | |
| Triangle Repair Group Heating & Cooling | 4.9★ (167) | In Knightdale |
| Twin Guns | 4.3★ (6) | In Knightdale |
| Underdog | 5.0★ (36) | In Knightdale |
| Weather Master Heating & Air Conditioning | 4.7★ (2,117) | In Knightdale |
| Z & A Remodeling | 5.0★ (1) | 10 mi |
National price ranges in USD, not adjusted for Knightdale. Each row names its basis and the month we checked it.
| Job | Low | Typical | High | Basis | Checked |
|---|---|---|---|---|---|
| Attic insulation | $1,700 | $2,100 | $2,500 | Per attic: typical range of customer-reported jobs (about $1 to $3 per sq ft). US national range | October 2026 |
We scored 62 Knightdale insulation contractors on ten factors, weighted as shown. A business is ranked when its trade is confirmed and it has 3 or more Google reviews or a claimed profile. A business with no Google reviews scores zero on rating, review volume and recency. Other unknown factors are left out, not counted as zero. Scores last refreshed October 22, 2026.
Paid placement never changes a rank or score. Featured businesses are paid, labelled, limited to 3 and shown above the ranking, outside it.
| Factor | Weight | Computed from | In Knightdale data |
|---|---|---|---|
| Reputation | 25% | Google star rating, adjusted for how many reviews back it | Measured |
| Credentials | 15% | Active state license, bond and workers’ comp on file | Not yet collected |
| Review volume | 10% | Number of Google reviews, compared with the most-reviewed business on the list | Measured |
| Recency | 5% | Share of reviews from the last 12 months | Not yet collected |
| Availability | 5% | Weekly open hours, Saturday, Sunday, 24/7 or same-day | Measured |
| Trade focus | 10% | How clearly the business does this trade (its Google category and name) | Measured |
| Proximity | 5% | Based in the city scores highest, less the farther away it is | Measured |
| Claimed profile | 10% | The business has claimed its ContractorsRanked profile (free or paid earn the same) | Measured |
| Partnered | 5% | The business links to ContractorsRanked from its own website with our badge, checked periodically | Measured |
| ContractorsRanked reviews | 10% | Verified customer reviews collected by ContractorsRanked: their rating and how many there are | Measured |